Ruling · Kokilā Vrata · 1979

Monday 9 July

Determinatein Baoding, under the Rashtriya Panchang method. Clear of every threshold by 494 minutes.

Decide it for

38°52′ N 115°28′ E · Asia/Shanghai · GeoNames 1816971

The two late afternoons

One ghaṭī is 24 minutes. Sāyāhna is last 3 of 15 day muhūrtas.

Late afternoon of Sunday 8 July

Pūrṇimā is absent from sāyāhna. Not taken.

16:49 sāyāhna beginssunset 19:46
16:2516:4917:1317:3718:0118:2518:4919:1319:3720:01

0 of 177 minutes covered

Late afternoon of Monday 9 July

Taken. The only late afternoon Pūrṇimā reaches.

16:48 sāyāhna beginssunset 19:45
16:2416:4817:1217:3618:0018:2418:4819:1219:3620:00

177 of 177 minutes covered

Pūrṇimā presentSāyāhna, the window the rule readsThe instant the tithi begins or ends

How it was decided

  1. 01

    Aṅga

    Pūrṇimā runs from 07:01 on Mon 9 Jul to 03:59 on Tue 10 Jul.

    1979-07-08T23:01:12Z → 1979-07-09T19:59:15Z

  2. 02

    Kāla

    Sāyāhna is last 3 of 15 day muhūrtas: 16:49–19:46 on the 8th, 16:48–19:45 on the 9th.

    sayahna: day-muhurta-13-15 · sunrise and sunset: upper limb, 31′ + 16′

  3. 03

    Rule

    Pūrṇimā must be present during sāyāhna. It covers 0 of 177 minutes on the 8th and 177 of 177 on the 9th.

    Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102

  4. 04

    Tie-break

    Only one late afternoon qualifies. No tie-break is needed.

    priority: unstated → only-day · margin 29629 s

  5. 05

    Ruling

    Kokilā Vrata, Baoding, 1979: Monday 9 July.

    confidence: determinate

Say it like this

In Baoding, Kokilā Vrata 1979 falls on Monday 9 July. Pūrṇimā runs from 07:01 on Mon 9 Jul to 03:59 on Tue 10 Jul and covers all of sāyāhna that late afternoon.

ahargana.org/baoding/festivals/1979/kokila-vrata · pac-rp@2026.1

Who says what

AuthorityKindDate
Ahargaṇa, pac-rpThis rulingMon 9 Jul
Ahargaṇa, classicalDisc centre, no refractionMon 9 Jul
compat-drikpanchangComparison profileMon 9 Jul
No institution has a recorded ruling for Baoding.

Institutional rulings are recorded with a source address, and are never edited to agree.

The rule, as data

/rules/kokila-vrata · ruleset 2026.3-draft

Month
Āṣāḍha, amānta
Pakṣa · aṅga
Śukla · Pūrṇimā
Kāla
Sāyāhna
Priority
Unstated
Tie-break
Longer coverage, as a boundary
Reference
CRC 1955, p. 102

“S 15 Guru purnima (paraviddha), Vyasa puja (paraviddha, 3 muhurtas after sunrise), Kokila vrata (sayahna vyapini). Siva sayanotsava (pradosavyapini).” Calendar Reform Committee 1955, General Rules for Religious Festivals, p. 102.

The same rule, elsewhere

Twelve places, west to east. Local clock times.

PlacePūrṇimāSāyāhna 8thCoveredSāyāhna 9thCoveredRuled
Los Angeles16:01 → 12:5917:15172 min17:150 min8 Jul
Chicago18:01 → 14:5917:27146 min17:260 min8 Jul
Jersey City19:01 → 15:5917:3088 min17:300 min8 Jul
Port of Spain19:01 → 15:5916:000 min16:000 min8 Jul
London00:01 → 20:5918:000 min18:00179 min9 Jul
Durban01:01 → 21:5915:060 min15:07124 min9 Jul
Dubai03:01 → 23:5916:290 min16:29163 min9 Jul
Delhi04:31 → 01:2916:360 min16:36166 min9 Jul
Kolkata04:31 → 01:2915:430 min15:43161 min9 Jul
Singapore06:31 → 03:2916:190 min16:19146 min9 Jul
Sydney09:01 → 05:5915:000 min15:00120 min9 Jul
Suva11:01 → 07:5915:310 min15:31133 min9 Jul
Profile · tradition
pac-rp@2026.1 · smarta
Rule
kokila-vrata@2026.3-draft
Engine · kernel
0.1.0 · de440 7eef…ea74
Boundary margin
300 s

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